This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX280, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI160 Standard Cylinder SI160BX280
The AirTAC SI160 Standard Cylinder SI160BX280 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 280mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX280, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX280
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI160 Standard Cylinder SI160BX280
The AirTAC SI160BX280 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 280 mm stroke, delivering a push force of 10053 N at 0.5 MPa. It features a G3/4 air port, an M36x2 rod thread, and 50 mm adjustable air cushions at both ends. AirTAC replaced this end-of-line unit with the SAI160BX280, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size to fit existing fixtures directly.
The SAI upgrade introduces a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and extended life. This specific SKU includes a SUS304 stainless steel rod for corrosion resistance, but because it lacks a magnet, it cannot accept position switches.
Airtac SI160 Standard Cylinder SI160BX280 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX280 |
| Bore size | Ø160 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160BX280 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160BX280 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160BX280
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI160 Standard Cylinder SI160BX280 Is Used
Heavy Stamping Presses
Drives large heavy-duty stamping and forming dies requiring high thrust and stable 160 mm bore profile cylinder geometry.
Pallet Lift Stations
Lifts loaded pallets vertically, utilizing the 10053 N push force to elevate materials safely within automation cells.
Automated Assembly Fixtures
Clamps large automotive or industrial components during machining using the robust 50 mm adjustable end cushions.
Replacing the Airtac SI160 Standard Cylinder SI160BX280 with the SAI160BX280
To replace the discontinued SI160BX280, order the SAI160BX280, verifying the ISO 15552 mounting interface, 160 mm bore, 280 mm stroke, and G3/4 port. Confirm your mounting accessory (such as LB foot or TC trunnion) and thread type (PT/G/NPT). Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, switch to an SAI model with the S suffix. Sizing both ways: the 160 mm bore yields 10053 N push at 0.5 MPa, while the neighboring 125 mm bore provides 6136 N. Note that a standard cylinder drifts without live air—the cushion only decelerates near stroke end—so for load holding, consider an external pilot check valve or the SAIL/BSAI lock variants. At 280 mm stroke, ensure adequate guide support to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX280
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160BX280 FAQ
Yes, the SI160BX280 is discontinued. The direct replacement is the SAI160BX280. It shares the identical ISO 15552 mounting interface, 160 mm bore, 280 mm stroke, output force, and G3/4 port, fitting directly into existing fixtures.
This double-acting cylinder has a G3/4 air port. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa, the push force is 14074 N, and the theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX280 replacement — usually within 7-8 hours.